How To Insert SIM & Micro SD Card To VIVO Y21s

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vivo 138 slot VIVO Y21s? How do I insert the SIM card into the tray correctly? Where is the microSD card

vivo 88 slot Card Slot 1 nano SIM + 1 nano SIM microSD ; Standby Mode Dual SIM Dual Standby ; 2G GSM 8509001800 MHz ; 3G WCDMA B1B5B8 ; 4G FDD-LTE B1B3B5B8